@slaw I’d bet Shitt would incorporate a switch in your current unit if you’d send it back.
I’ll email them. But, I’ve heard they are not quick to respond at times. And, from what I’ve read, anything asked about which they don’t offer in a product is usually answered with ‘well, this is what we felt best’, or something similar. For them to even consider a retrofit may cost more than the $200 unit I spoke of, and it is available now if I want it. Actually, there is one guy selling a used one on eBay right now for very very close to new cost. He is accepting offers though.